Derval O'Rourke: Lunches to keep you full of beans — like my three-bean salad

"As we are coming into the summer months, it’s tempting to think school will be finished in a few weeks and forget about packed lunches, but I’m talking about adult packed lunches."

Derval O'Rourke's three-bean salad

One of the best pieces of advice I got years ago was to always pack your own lunch, whether it was going to the office for work or heading on a flight. 

The advice was from a fantastic chef, and she explained to me her belief that if you are eating lunch, it should be made with the best, tastiest and healthiest ingredients you have.